Karyological Investigation on Three Zephyranthes Species and Its Taxonomic Significance
Karyological Investigation on Three Zephyranthes Species and Its Taxonomic Significance
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三种泽兰属植物的核学研究及其分类学意义
DOI：
10.1508/cytologia.85.163
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发表时间：
2020
期刊：
影响因子：
1
通讯作者：
Syeda Sharmeen Sultana
中科院分区：
文献类型：
--
作者：
C. Dash;Md. Oliur Rahman;Syeda Sharmeen Sultana
摘要 对葱莲属（Zephyranthes Herb.）的三个物种，即白花葱莲（Z. candida (Lindl.) Herb.）、韭莲（Z. carinata Herb.）和管花葱莲（Z. tubispatha Herb.）进行了细胞分类学研究，以描述其特征并阐明它们之间可能的进化关系。发现这些物种具有不同的染色体数目和核型公式，例如白花葱莲为2n = 38 = 32m + 6sm，韭莲为2n = 24 = 14m + 10sm，管花葱莲为2n = 48 = 16m + 32sm。仅在管花葱莲中观察到一对随体。尽管这三个葱莲属物种在形态特征方面显示出密切的关系，然而，它们在核型研究中表现出显著差异。目前的细胞遗传学和分类学研究结果表明，从进化的角度来看，管花葱莲相对较为进化，而韭莲较为原始。
Summary Three species of Zephyranthes Herb. viz . Z. candida (Lindl.) Herb., Z. carinata Herb. and Z. tubispatha Herb. were cytotaxonomically studied to characterize and elucidate probable evolutionary relationship among them. These species were found to possess different chromosome number and karyotype formula such as 2 n =38=32m+6sm in Z. candida , 2 n =24=14m+10sm in Z. carinata and 2 n =48=16m+32sm in Z. tubispatha . A pair of satellites was observed only in Z. tubispatha . Despite three Zephyratnes species showed close relationship with reference to morphological characters, however, they displayed notable differences in the karyological study. The present cytogenetical and taxonomical findings indicated that Z. tubispatha was relatively advanced and Z. carinata was primitive from the evolutionary point of view.